To provide a leg body of high rigidity by firmly connecting leg rods, side rods and cross rods.

Connecting pieces 16 opposite to each other, are projected from upper end portions of the leg rods 10, both side end portions of the cross rods 7 having hollow holes 12 of cross-sectional shape approximately complementary to both connecting pieces 16, are respectively fitted in both connecting pieces 16, and a pair of connecting tools 20 directed in the longitudinal direction are fixed to opposite faces of both side end portions of the front and rear cross rods 7 in a state of inserting bolts 28 to opposite faces of the cross rods 7 to be engaged and fixed to screw holes 19 formed on the connecting pieces 16, thus the connecting pieces 16 and the cross rods 7 are connected with each other, both end portions of the tubular side rods 8 are fitted in front and rear connecting tools 20, and the connecting tools 20 and the side rods 8 are connected by means of bolts 31.